dried fruit vs fruitcake

dried fruit

noun
  • A mixture of sultanas, raisins, citrus peel, and cherries, used as an ingredient in fruit cakes. 

  • Small fruit that has been preserved by drying. 

fruitcake

noun
  • A cake containing dried fruits and, optionally, nuts, citrus peel and spice. 

  • A crazy or eccentric person. 

How often have the words dried fruit and fruitcake occurred in a corpus of books? (source: Google Ngram Viewer )